Trying to get started watching videos on my D4...

This has been kind of a frustrating process. It seems like you have to get things set up just right in order to get any of the third party video players to play your file, so I was hoping you all could give me a shove in the right direction.

What is the best video player for the D4, and what settings should I use when I convert my video files? I'm converting AVI DVD rips to MP4 for the phone, and not having much success. Any advice you could offer would be much appreciated, and please let me know if there's anything you need to know about my setup in order to understand where I might be going wrong.